| Ref protection plugin. | |
| Protects against commits being lost by creating backups of deleted refs under | |
| the `refs/backups/` namespace. | |
| Branches under `refs/heads/` that are deleted or rewritten are backed up | |
| as `refs/backups/heads/branch-name-YYYYMMDD-HHmmss`. | |
| Tags under `refs/tags/` that are deleted are backed up (as branches) as | |
| `refs/backups/tags/tag-name-YYYYMMDD-HHmmss`. |